In this bonus episode of How We Got Here, we take a look back at the infamous collapse of the Church Hill tunnel in Richmond. On Oct. 2, 1925, the train tunnel gave way during construction work, killing at least four men and entombing at least two people whose bodies remain there today. A steam locomotive and ten flatcars are still buried beneath Church Hill as well. We talk to the son of two survivors of that fateful day, as he visits the now-sealed tunnel entrance for the very first time